Oracle Database Appliance (ODA) (MOSC)

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snapshot database functionality

edited Sep 30, 2015 10:04AM in Oracle Database Appliance (ODA) (MOSC) 2 commentsAnswered

Hello

I don't fully understand the functionality of creating snapshot databases on ODA.

Slides say:

Snapshot databases only uses space for the data that changes

–Only meta-data is originally created

–Blocks are written when data is changed

The ODA Admin Ref Guide says:

An Oracle snapshot database is created by taking a snapshot of the ACFS file system where the source datafiles reside. The source database can be a single instance, Oracle RAC, or Oracle RAC One Node. Compared to other methods of creating copies of databases, snapshot databases require less time and storage space and involve no downtime of the source database. Additionally, you can create any database type and class from any other type and class. For example, you can create an Oracle RAC database from an Oracle RAC One Node database. Similarly, you can create a database that is different

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